write a driver for the code and attach both so that the driver can be run to test the Clas
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write a driver for the code and attach both so that the driver can be run to test the Class
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- In java Implement a public static double[] ageMetrics(Patient[] patients) method that returns an array of length 3 with the following three values (starting at index 0): The age of the youngest patient The age of the oldest patient The mean age of all patientsPlease help debug this: Debugging Exercise 4-3, Farrell, Joyce, Java Programming, 9th edition, Cengage Learning public class DebugBox { private int width; private int length; private int height; private FixDebugBox() { length = 1; width = 1; height = 1; } public DebugBox(int width, int length, int height) { width = width; length = length; height = height; } public void showData() { System.out.println("Width: " + width + " Length: " + length + " Height: " + height); } public double getVolume() { double vol = length - width - height; return vol; } }Consider the following class:1 public class Student {2 private int studentNumber;3 private Student labPartner;4 private static Student classPres = null;5 private static int nextStudentNumber = 100;67 public Student () {8 this.studentNumber = Student.nextStudentNumber;9 Student.nextStudentNumber ++;10 this.labPartner = null;11 }1213 public void setLabPartner (Student labPartner) {14 this.labPartner = labPartner;15 }1617 public static void setClassPres (Student pres) {18 Student.classPres = pres;19 }20 }(a) Write code that is able to construct an array of 1000 student objects and loads them in increasingstudent number order into that array. The lab partners of these students should all be null. TheclassPres should also be null.
- Public classTestMain { public static void main(String [ ] args) { Car myCar1, myCar2; Electric Car myElec1, myElec2; myCar1 = new Car( ); myCar2 = new Car("Ford", 1200, "Green"); myElec1 = new ElectricCar( ); myElec2 = new ElectricCar(15); } }Q27 for java programing: public static void main(String[] args) { Dog[] dogs = { new Dog(), new Dog()}; for(int i = 0 ; i < dogs.length; i++) dogs[i].wo(); Cat[] cats = { new Cat(),new Cat(),new Cat()}; for(int i = 0 ; i < cats.length; i++) cats[i].me(); System.out.print(Dog.getCount()+" woofs and"); System.out.println(Cat.getCount()+" mews"); System.out.println("=====>>>"+decision()); } class Counter { private static int count; public static void inc() { count++;} public static int getCount() {return count;} } class Dog extends Counter{ public Dog(){} public void wo(){inc();} } class Cat extends Counter{ public Cat(){} public void me( ){inc();} } The Correct answer: public static void main(String[] args) { Dog[] dogs = { new Dog(), new Dog()}; for(int i = 0 ; i < dogs.length; i++) dogs[i].wo(); Cat[] cats = { new…Solve below java problem please. You are given a list of Employee objects and you need to implement a method that returns the top n highest-paid employees. class Employee { private String name; private double salary; public Employee(String name, double salary) { this.name = name; this.salary = salary; } public String getName() { return name; } public double getSalary() { return salary; } }
- JAva Implement a class Robot that simulates a robot wandering on an infinite plane. The robot is locatedat a point with integer coordinates and faces north, south, east, or west. Supply methods:public void turnLeft()public void turnRight()public void move()public Point getLocation()public String getDirection()The turnLeft and turnRight methods change the direction but not the location. The move method movesthe robot by one unit in the direction it is facing. The getDirection method returns a string “N”, “S”,“E”, “W”. For the new object, the initial location and facing should be specified. For the initial facing, 0means north, 1 means east, 2 means south, and 3 means west.A tester class, RobotTester, has been provided as follows to help you how to implement the Robot class.Therefore, implement the Robot class such that the following RobotTester class can be executed withoutany changes.import java.awt.Point;/**A class to test the Robot class.*/public class RobotTester{/**Tests the…in java Re-implement the Rational class : class Rational {private int numerator;private int denominator;public Rational(int num, int den) {numerator = num;denominator = den;}public Rational add(Rational o) {int NumResult = numerator * o.denominator + denominator * o.numerator;int DenResult = denominator * o.denominator;return simplify(NumResult, DenResult);}public Rational sub(Rational o) {int NumResult = numerator * o.denominator - denominator * o.numerator;int DenResult = denominator * o.denominator;return simplify(NumResult, DenResult);}public Rational mul(Rational o) {int NumResult = numerator * o.numerator;int DenResult = denominator * o.denominator;return simplify(NumResult, DenResult);}public Rational div(Rational o) {int NumResult = numerator * o.denominator;int DenResult = denominator * o.numerator;return simplify(NumResult, DenResult);}private int gcd(int a, int b) {if (b == 0)return a;return gcd(b, a % b);}private Rational simplify(int num, int den) {int gcdValue =…// Simulates a simple car with operations to drive and check the odometer.public class SimpleCar { // Number of miles driven private int miles; public SimpleCar(){ miles = 0; } public void drive(int dist){ miles = miles + dist; } public void reverse(int dist){ miles = miles - dist; } public int getOdometer(){ return miles; } public void honkHorn(){ System.out.println("beep beep"); } public void report(){ System.out.println("Car has driven: " + miles + " miles"); } }
- JAVA A Matryoshka, or Russian nesting doll is either solid or hollow. If it is hollow, it contains another doll (which can also be hollow or solid). Given the supplied Doll class, implement a recursive method named show that returns a String representing the chain for dolls, for example Natasha contains Tanya contains Peter public class Doll{ private String name; private Doll dollInside; /** * Constructs a hollow doll with the doll it contains. */ public Doll(String theName, Doll theDoll) { name = theName; dollInside = theDoll; } /** * Constucts a solid doll. */ public Doll(String theName) { name = theName; dollInside = null; } public boolean isSolid() { return dollInside == null; } public String getName() { return name; } public Doll getDollInside() { return dollInside; }} public class DollViewer{ public static String show(Doll d) { /* code goes here */ } public static void main (String [] args) { Doll dolls1 =…FOR JAVA Write a Java class named Book, which has a name, an author and a pub- lisher. This class must also have a static field (an array with length 100) which holds names of all constructed books, and a static method which returns the number of constructed books.In Java please. Reimplement the TrafficLight class using a simple counter that is advanced in each call to next. If the traffic light was initially green, the counter has values 0 1 2 3 4 5 6 … . If the traffic light was initially red, the counter has values 2 3 4 5 6 7 8 … . Compute the current color and the number of reds, using integer division and remainder. Help me with this code (fill in /* Your code goes here */): /** A simulated traffic light.*/public class TrafficLight{ private int steps; /** Constructs a green traffic light. */ public TrafficLight() { /* Your code goes here */ } /** Constructs a traffic light. @param initialColor the initial color "green", "yellow", or "red" */ public TrafficLight(String initialColor) { /* Your code goes here */ } /** Moves this traffic light to the next color. */ public void next() { steps++; } /** Returns the current color of this traffic light. @return…